bpftool: Documentation for bpftool prog profile (319c7c1f) · Commits · 戴 / test

tools/bpf/bpftool/Documentation/bpftool-prog.rst

+19 −0

Original line number	Diff line number	Diff line
		@@ -30,6 +30,7 @@ PROG COMMANDS
		\| bpftool prog detach PROG ATTACH_TYPE [MAP]
		\| bpftool prog tracelog
		\| bpftool prog run PROG data_in FILE [data_out FILE [data_size_out L]] [ctx_in FILE [ctx_out FILE [ctx_size_out M]]] [repeat N]
		\| bpftool prog profile PROG [duration DURATION] METRICs
		\| bpftool prog help
		\|
		\| MAP := { id MAP_ID \| pinned FILE }
		@@ -48,6 +49,9 @@ PROG COMMANDS
		\| ATTACH_TYPE := {
		\| msg_verdict \| stream_verdict \| stream_parser \| flow_dissector
		\| }
		\| METRIC := {
		\| cycles \| instructions \| l1d_loads \| llc_misses
		\| }


		DESCRIPTION
		@@ -189,6 +193,12 @@ DESCRIPTION
		not all of them can take the ctx_in/ctx_out
		arguments. bpftool does not perform checks on program types.

		bpftool prog profile PROG [duration DURATION] METRICs
		Profile METRICs for bpf program PROG for DURATION
		seconds or until user hits Ctrl-C. DURATION is optional.
		If DURATION is not specified, the profiling will run up to
		UINT_MAX seconds.

		bpftool prog help
		Print short help message.

		@@ -311,6 +321,15 @@ EXAMPLES

		# rm /sys/fs/bpf/xdp1

		\|
		\| # bpftool prog profile id 337 duration 10 cycles instructions llc_misses

		::
		51397 run_cnt
		40176203 cycles (83.05%)
		42518139 instructions # 1.06 insns per cycle (83.39%)
		123 llc_misses # 2.89 LLC misses per million insns (83.15%)

		SEE ALSO
		========
		bpf\ (2),